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The former "United States of Tara" co-stars will recur on the Aaron Sorkin drama.

HBO is adding staffers to The Newsroom.

The Aaron Sorkin drama has enlisted Rosemarie DeWitt and Patton Oswalt as recurring players for its sophomore season, The Hollywood Reporter has confirmed.

Oswalt will play Jonas Pfeiffer, the new vice president of human resources at cable network Atlantis Cable News, while DeWitt will portray Rebecca Halliday, a litigator brought in to defend the network in a wrongful termination lawsuit.

The casting marks a reunion for Oswalt and DeWitt, who played a couple on the Showtime dramedy United States of Tara.

Oswalt, repped by CAA, Generate and Ginsburg Daniels, most recently had an arc on CBS' Two and a Half Men and HBO's Bored to Death. ICM Partners, Wishlab and Ziffren Brittenham-repped DeWitt's credits include Mad Men and the feature The Odd Life of Timothy Green.